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<br />':, <br /> <br />,,' . PRELIMINARY. <br />SUBJECT TO REVISIO['~ <br /> <br />concrete gravity structure contains a gated spillway provided with sixteen <br /> <br /> <br />3D-feet x 64-feet tainter gates with their operating machinery. There are <br /> <br /> <br />wing dams on either side of the main dam. The north wing dam is 3.880 feet <br /> <br /> <br />long. connecting to the earthfill structure of the main dam at the north <br /> <br /> <br />abutment. The south wing dam is 5.807 feet long and connects to the south end <br /> <br /> <br />of the concrete structure of the main dam. <br /> <br />,. <br /> <br />a <br /> <br />, <br /> <br />~ <br />.:;. <br />--J <br /> <br />c. <br /> <br />Outlet Works. <br /> <br />/ <br /> <br />1. The outlet works consist of four six-foot by seven and a half-foot <br /> <br /> <br />rectangular sluicing conduits and two four-foot by four-foot regulating <br /> <br /> <br />conduits. Water regulation through each of the conduits is controlled by two <br /> <br /> <br />hydraulically operated slide gates located near the upstream end of the <br /> <br /> <br />conduits. Water released through the outlet works and over the concrete <br /> <br /> <br />spillway is discharged into the stilling basin before it is directed back into <br /> <br /> <br />the Arkansas River. <br /> <br />D. Stillin~ Basin. <br /> <br />/ <br />./ <br /> <br />1. The stilling basin is a concrete structure approximately 185 feet <br /> <br /> <br />long and 1174 feet wide. Energy dissipation was intended to be accomplished <br /> <br /> <br />by water impacting a double row of eight-foot high baffle blocks and also a <br /> <br /> <br />nine-foot high end sill. Sediment deposition within the stilling basin has <br /> <br /> <br />effectively bufieo the end sill and most probably the baffle blocks such that <br /> <br /> <br />impact energy dissipation does not occur during normal irrigation releases. <br /> <br /> <br />Water exits the stilling basin through a river channel in the sediment <br /> <br /> <br />deposits located on the right side of thje basin. <br /> <br /> <br /> <br /> <br />E. Existin~ Hydropowp-r FRcility. <br /> <br />1. There are no existing hydroelectric units at the dam nor are there <br /> <br /> <br />provisions made for any additions of such to the project. <br /> <br />2 <br />